An angular blinking jamming method based on electronically controlled corner reflectors

Passive jamming is believed to have very good potential in countermeasure community.In this paper,a passive angular blinking jamming method based on electronically controlled corner reflectors is proposed.The amplitude of the incident wave can be modulated by switching the corner reflector between the penetration state and the reflection state,and the ensemble of multiple corner reflectors with towing rope can result in complex angle decoying effects.Dependency of the decoying effect on corner reflectors’radar cross section and positions are analyzed and simulated.Results show that the angle measured by a monopulse radar can be significantly interfered by this method while the automatic tracking is employed.

Dynamic tear meniscus parameters in complete blinking:insights into dry eye assessment

AIM:To investigate the relationship between dynamic tear meniscus parameters and dry eye using an automated tear meniscus segmentation method.METHODS:The analysis of tear meniscus videos captured within 5s after a complete blink includes data from 38 participates.By processing video data,several key parameters including the average height of the tear meniscus at different lengths,the curvature of the tear meniscus’s upper boundary,and the total area of the tear meniscus in each frame were calculated.The effective values of these dynamic parameters were then linearly fitted to explore the relationship between their changing trends and dry eye disease.RESULTS:In 94.74%of the samples,the average height of central tear meniscus increased over time.Moreover,97.37%of the samples exhibited an increase in the overall tear meniscus height(TMH)and area from the nasal to temporal side.Notably,the central TMH increased at a faster rate compared to the nasal side with the temporal side showing the slowest ascent.Statistical analysis indicates that the upper boundary curvature of the whole tear meniscus as well as the tear meniscus of the nasal side(2,3,and 4 mm)aid in identifying the presence of dry eye and assessing its severity.CONCLUSION:This study contributes to the understanding of tear meniscus dynamics as potential markers for dry eye,utilizing an automated and non-invasive approach that has implications for clinical assessment.

Increase of photoluminescence blinking frequency of 3C–SiC nanocrystals with excitation power

Super-resolution optical fluctuation imaging is dependent on the blinking frequency of fluorophores.Consequently,improvement of the photoluminescence(PL)blink frequency is important.This is achieved for 3C–SiC nanocrystals(NCs)by simply increasing the excitation power.Using an excitation of 488 nm with powers of 5μW to 50μW,individual 3C–SiC NC always exhibits PL blinking with a short on-state sojourn time(<0.1 s).A fast Fourier transform method is exploited to determine the PL switching frequency.It is found that the frequency of the bright state increases from 2 Hz to 20 Hz as the excitation power increases from 5μW to 50μW,which is explained by the Auger photonionization model.

The role of surface charges in the blinking mechanisms and quantum-confined Stark effect of single colloidal quantum dots

The two frequently observed phenomena,photoluminescence(PL)blinking and quantum-confined Stark effect(QCSE)-induced spectral diffusion,are not conducive to the applications of colloidal quantum dots(QDs).It remains elusive how these two phenomena are linked to each other.Unraveling the potential link between blinking and QCSE could facilitate the adoption of appropriate strategies that can simultaneously suppress both PL blinking and spectral diffusion.In this work,we investigated the blinking mechanism and QCSE of single CdSe/CdS/ZnS QDs in the presence of positive and negative surface charges using single-dot PL spectroscopy.We found that the negative surface charges can simultaneously suppress PL blinking and spectral diffusion of single QDs.On the other hand,the positive surface charges could change the blinking mechanisms of QDs from Auger-blinking to band-edge carrier(BC)-blinking.Two types of QCSE were observed,and a significant QCSE-induced spectral broadening of 5.25 nm was measured,which could be attributed to the hopping of surface charges between different surface-trap sites.Based on these findings,several theoretical models are proposed to explain various phenomena observed.

Clickable rhodamine spirolactam based spontaneously blinking probe for super-resolution imaging

Spontaneously blinking probe, which switches between dark and bright state without UV or external additives, is extremely attractive in super resolution imaging of live cells. Herein, a clickable rhodamine spirolactam probe, Atto565-Tet, is rationally constructed for spontaneously blinking after biorthogonal labelling and successfully applied to super resolution imaging of mitochondria and lysosomes.

Blinking adaptation for synchronizing a mobile agent network

We investigate the issue of synchronizing a blinking coupling mobile agent network through a blinking adaptation strategy,where each agent with blinking wave emission behavior not only adjusts its blinking period according to the local property of its neighbors,but also coordinates its blinking phase with those of neighboring agents.In leading the agents to blink orderly with a blinking period commensurate with the characteristic time of the dynamical oscillator,the presented blinking adaptation strategy works effectively in guaranteeing the synchronous motion of the considered network when the power density is large.In addition,the influence of the controlling parameter and moving velocity on network evolution is studied by assessing the convergence time.

Mathematical model of thermal effects of blinking in human eye

Blinking is regarded as the continuous interrupted eyelid closure or opening and its thermal effect will compromise between these two. During a blink, the heat loss via convection, radiation and tear evaporation from cornea is prevented, warm tear is lay- ered across corneal surface and the vessels of the palpebral conjunctiva provide heat to anterior eye. In most of the thermal models in human eye that are found in literatures, effect of blinking is not included, simulation is carried out only in open eye. Thus, in this paper, thermal effects of blinking are investigated using one-dimensional finite element method in transient state case. The bio-heat transfer process is simulated during different blinking rates, lid closure and opening. The simulation is carried out using normal and extreme values of ambient temperatures, blood temperatures, evaporation rates, blood perfusion rates, and lens thermal conduetivities. Blinking is found to increase corneal and lens temperature by 1.29℃ and 0.78℃ respectively when compared to open eye. The results obtained from this model are useful in predicting temperature distribution in different laser eye surgeries, hyperthermia and cryosurgery treatment of eyelid carci- noma, choroidal melanoma and can be used for diagnosing temperature-related diseases.

Photostability of colloidal single photon emitter in near-infrared regime at room temperature

The photostability of a colloidal single photon emitter in near-infrared regime at room temperature is investigated.The fluorescence lifetime,blinking phenomenon,and anti-bunching effect of a single CdTeSe/ZnS quantum dot with an emission wavelength of 800 nm at room temperature are studied.The second-order correlation function at zero delay time is much smaller than 0.1,which proves that the emission from single quantum dots at 800 nm is a highly pure single-photon source.The effects of the irradiation duration on the fluorescence from single quantum dots are analyzed.The experimental results can be explained by a recombination model including a multi-nonradiative recombination center model and a multi-charged model.

电力系统仿真支撑系统BLink

介绍了采用面向对象和可视化技术的电力系统仿真模型开发工具Blink.文中对Blink系统的技术特点、对应仿真机的软硬件结构组成、算法和系统建模做了介绍。最后通过该支撑系统给出了一个仿真的实例。

Patterns of cortical reorganization in facial synkinesis:a task functional magnetic resonance imaging study

Facial synkinesis,a sequela of peripheral facial nerve palsy,is characterized by simultaneous involuntary facial movement during a voluntary desired one.Maladaptive cortical plasticity might be involved in the dysfunction of facial muscles.This cohort study investigated the cortical functional alterations in patients with unilateral facial synkinesis,using the task functional magnetic resonance imaging.Facial motor tasks,including blinking and smiling,were performed by 16 patients（aged 30.6 ± 4.5 years,14 females/2 males） and 24 age-and sex-matched healthy controls（aged 29.1 ± 4.2 years,19 females/5 males）.Results demonstrated that activation in the cortico-facial motor representation area was lower during tasks in patients with facial synkinesis compared with healthy controls.Facial movements on either side performed by patients caused more intensive activation of the supplementary motor area on the contralateral side of the affected face,than those on the unaffected side.Our results revealed that there was cortical reorganization in the primary sensorimotor area and the supplementary motor area.This study was registered in Chinese Clinical Trial Registry（registration number： Chi CTR1800014630）.

基于Blink的UCC控制系统仿真

计算机仿真支撑软件在先进的仿真支撑系统支持下,可以更大程度地提高仿真机运行的可靠性,缩短仿真机的开发时间和减少维护工作量。介绍了仿真支撑软件Blink的建模思想及特点,阐述了基于Blink的机组协调控制(UCC)的仿真方法及步骤,并进行了仿真调试,仿真效果良好。

Ga^＋＋通道拮抗剂对面神经损害保护作用的初步研究

目的：探讨Ga^++通道拮抗剂对面神经损害的保护作用。方法：采用Blink反射这一客观的电生理检查作为观察指标来观察Bell's麻痹的恢复状况，通过随机分组，空白对照来分析不同剂量的Ga^++通道拮抗剂对面神经损害保护作用。结果：较大剂量的Ga^++通道拮抗剂使Bell's麻痹的Blink反射（R1、R2）潜伏期的优于空白对照组（P＜0．01）。结论：Ga^++通道拮抗剂对面神经损害具有保护作用。

面神经炎的电生理学诊断研究

目的:探讨神经电生理学检测对面神经炎(双称Bell麻痹)的诊断价值。方法:对75例面神经炎患者主要施行了瞬目反射(Blink-Reflex)和强度-时间曲线测定。结果:瞬目反射(Blink-Reflex)测定和强度-时间曲线测定在疾病的不同时期可有电生理的异常特征。结论:瞬目反射(Blink-Reflex)测定和强度-时间曲线测定有助于疾病的诊断及预后的判断。

Development of a human computer Interface system using EOG

Bio-based human computer interface (HCI) has attracted more and more attention of researches all over the world in recent years. In this paper, a HCI system which based on electrooculogram (EOG) is proposed. It transforms electrical po-tentials recorded by horizontal and vertical EOG into a computer in order to control external equipment. The system consists of EOG acqui-sition unit, EOG pattern recognition part and control command output unit. Three plane elec-trodes are employed to detect EOG signals, which contain the information related to the eye blinking and vertical (or horizontal) eye move-ments referred to pre-designed command table. An online signal processing algorithm is de-signed to get the command information con-tained in EOG signals, and these commands could be used to control the computer or other instruments. Based on this HCI system, the remote control experiments driven by EOG are realized.

基于BLINK的DEH控制系统仿真

火电机组仿真模型按生产流程划分为锅炉设备模型、汽机设备模型、发电机设备模型和控制系统模型。仿真支撑软件对仿真机的开发、维护是至关重要的。本文以某300MW机组的DEH控制系统为例,介绍了基于Blink仿真支撑软件控制系统仿真模型的建立、调试方法及步骤,同时简要介绍了仿真支撑软件Blink的建模思想及特点,应用本文介绍的方法,在开发多台仿真机的具体实践中取得了良好的效果,缩短了仿真机的开发时间,有利于提高仿真机运行的可靠性。

基于BLINK的DCS手自动操作站的仿真及应用

仿真支撑系统的内核主要有模型数据库,算法数据库,模型的执行与调度,进程、线程的管理与调度等部分构成。仿真支撑软件对仿真机的开发、维护是至关重要的。在开发仿真机时,可以根据被仿真的对象或系统开发新的算法加载到算法数据库。讨论了基于仿真支撑软件Blink的DCS手自动操作站控制算法的仿真过程及步骤,并阐述了此算法在仿真机开发中的应用方法。

基于BLINK的DCS控制系统仿真

简要介绍了仿真支撑软件Blink的建模思想、功能及特点,并介绍了基于Blink的DCS控制系统的仿真方法及步骤,总结了高效建立控制系统仿真模型的体会。

新媒体时代下小众独立杂志的内容分析——以《布林客Blink》为例

随着新媒体时代的到来,杂志跟报纸一样受到了互联网极大的冲击。但是一种原本被淘汰了的小众独立杂志形式却如雨后春笋般出现并成长了起来,可见传统媒体仍然具有新媒体无法取代的竞争力,其中小众化定位是最为明显的生存之道。以《布林克Blink》为例,以内容分析法分析其主题、文章、图片、板式和作者的特点,并以小见大,分析小众独立杂志的特点。

Association between tear film break up time and blink interval in visual display terminal users

AIM：To investigate the association between tear film break up time（TBUT）and blinking interval in visual display terminal（VDT）users.METHODS：Nine hundred and thirty VDT users underwent dry eye testing,and functional visual acuity（FVA）test.The blinking interval during FVA was compared with TBUT.Subjects with longer blinking interval than TBUT were considered as unstable tear film.Logistic regression analysis revealed the risk factors for unstable tear group.RESULTS：Among 930 workers,858 subjects（92.3%）participated in this study.Almost 80% of the subjects were categorized into the unstable tear group.Unstable tear group has significantly lower Schirmer values and TBUT（17.5±11.6 vs 21.1±11.5 mm,3.7±2.6 vs 5.7±2.7s,both P〈0.001）.There were no significant differences in epithelial staining or severity of symptoms.Logistic regression showed that over 40y was a risk for being unstable tear group[odds ratio（OR）=1.53;95%confidence interval（CI）=1.06-2.20].Contact lens use was protective factor for being in the unstable tear group（OR=0.37;95%CI=0.26-0.53）.CONCLUSION：Subjects with shorter TBUT than blinking interval are prevalent among VDT users.Subjects over the age of 40 shows an increased risk for unstable tear film.